Improvement in harrows



H. I. LUND.

HARROW.

No. 191,604. Patented June 5,1877.

, ATTORNEYS.

N, FEI'ERS. PNOTQ-UTHOGRAPHER, WASHINGTON. I] C.

UNITED STATES PATENT QFFIGE.

HANS. IVER LUND, OF CHARLOTTE, IOWA.

IMPROVEMENT IN HARROWS.

Specification forming part of Letters Patent No. 191,604, dated June 5,1877; application filed April 16, 1877.

T 0 all whom tt may concern:

Be it known that I, HANS I. LUND, of Charlotte, in the county of Clintonand State of Iowa, have invented a new and useful Improvement inHarrows, of which the following is a specification:

Figure 1 is a top view of a section of my improved harrow. Fig. 2 is aside view of the same. Fig. 3 is a top view of a portion of thebarrow-frame, showing a modification. Fig. 4 is a detail section takenthrough the line w :c, Fig. 3.

Similar letters of reference indicate correspondin g parts.

The object of this invention is to furnish an improved iron barrow,which shall be simple in construction, light, strong, and durable, ofless draft'than an, ordinary harrow, of less size, inexpensive inmanufacture, and effective in operation, breaking up the11111113813110!- oughly, and stirring up the soil evenly.

Theinvention will first be described in connection with the drawing, andthen pointed out in the claim.

'lhe harrow is designed to be made in three sections, all exactly alike,one, two or three of which may be used at a time, and one of which isshown in the drawings.

A and B are the front and rear bars of the harrow, which are parallelwith each other, and at right angles with the line of draft. The bars AB are connected to each other by bars 0 D, which are inclined and crosseach other at acute angles, forming diamond-shaped spaces between them.E are the teeth, which are inserted at the points where the bars 0 Dcross each other, and where they meet the bars A B. The teeth E are madewith a shoulder, which rests against the under side of the bars, andwith screw-threads upon their upper ends to receive the nuts by whichthey are secured to the bars and the bars are clamped together.

If desired, the teeth E may have heads formed upon them, may be passedthrough the bars 0 D at their points of intersection, and secured inplace by a clamping-bar, I-I, placed upon their heads, made withshoulders to fit against the edges of the bars D, and secured to thebars (J by two bolts, as shown in Figs. 3 and 4. The bars 0 D are placedat such an angle that the paths of the teeth E may be equally distantfrom each other, and that no two teeth may travel in the same path. Theteeth E are made square, and are set with a corner forward, sothat theymay more readily cut the soil. Each of the bars A B has two holes formedin it for the attachment of the draft, so that when the teeth E becomeworn upon one side the draft may be attached to the other bar, and theother side of the teeth used. By this arrangement, also, clods will bepassed back from one tooth to another, and will be thoroughly broken upbefore they can escape.

F is the draw-bar, which is made solong that all the sections used maybe attached to it side by side. The draw-bar F is connected with eachsection by-two short chains or rods, G, so that the said sections may bedrawn forward squarely, and may be kept from swinging around so as tobring two teeth into the same path.

Having thus described my invention, I I claim as new and desire tosecure by Letters Patent-.-

In a harrow, the combination of bars 0 D and teeth E with bars H, whichbear upon the heads of the teeth, and bind together the crossed bars ofthe frame, substantially as shown and described.

HANS IVER LUND.

Witnesses H. MUGER, MAURICE TESTER.

